Sapphire crystal different reflective properties than Glass?

[kook]

I have a PAM rep with sapphire crystal and AR and a few with mineral glass with AR. It seems like the glass is more clear, less diffuse reflection. Hard to explain.

Anyone have any thoughts?

 

[alvinado]

usually mineral glass has a more milky appearence than sapphire but for you case, it may be due to the fact that the AR coating on the sapphire version is thicker?

I think that might be the case.

 

[seventhexile]

Does anyone know what the sapphire crystal is made out of ?

I dont think its real sapphire.. since well... it would be worth a hell of a lot more then it is.
.. I think at least.

 

[alvinado]

In the watch industy, what we call sapphire crystal is usually made from synthetic sapphire, it is manmade, but has the same hard properties of real sapphire but without the blue coloring.

In the rep world, if someone say the glass is synthetic sapphire, it means mineral glass.
I am 100% sure on that, guess who started the synthetic sapphire shit?

 

[kimdeal]

I'd guess what you are seeing is actually a difference in the AR coating, and probably not a difference in the crystal itself. Mineral and sapphire are very hard to tell apart visually. Mineral crystals, viewed from the edge, appear a bit green (like a pane of window glass), and sapphire crystals appear a bit pink - but it is very subtle.

Sapphire crystals are basically the same material as sapphire stones, except the sapphires for watch crystals are lab-grown. Actually, I think sapphires and rubies are the same chemical composition, except for impurities in the material that give them a red or blue color.

 

[Rocketeer]

Watch Sapphires are grown in crystal form from a substance called Corundum which is a crystalline form of aluminium oxide.

 

[Mr.Majestyk]

Glad to see you posting again Rocket!!!! Loving my 6152!

Anyhow...this has always been an issue after discovering the double AR on GEN Breitlings.
Could it also be the curvature of the crystal/glass...reflection & refractions. From what I've learnt here, different ARs aLso have different colours, again not an expert, it's just what I've read.

 

[jayzm5]

I agree a real saphhire out of genuie will cost more than the most replica watches themselves

In the watch industy, what we call sapphire crystal is usually made from synthetic sapphire, it is manmade, but has the same hard properties of real sapphire but without the blue coloring.

In the rep world, if someone say the glass is synthetic sapphire, it means mineral glass.
I am 100% sure on that, guess who started the synthetic sapphire s**t?